US Bridges

No. Adams Point RD over Irrigation Canal

Fair

Klamath County, Oregon · 009 MI N of HWY 50 · Structure no. 35C101109900090

Built
1980
45 years old
Condition
Fair
inspected February 2023
Type
Slab
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
112
2020 count
Owner
County
County Highway Agency

About this bridge

No. Adams Point RD over Irrigation Canal is a prestressed concrete slab carrying No. Adams Point RD over Irrigation Canal in Klamath County, Oregon. It was built in 1980, so it is 45 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 112 vehicles a day, projected to reach 122 by 2025. The structure is 37 ft (11.3 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNo. Adams Point RD
CrossesIrrigation Canal
Location009 MI N of HWY 50
RouteCounty Highway C1099
StateOregon
Coordinates42.02961, -121.50242
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.8 US tons
Inventory rating25.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span35 ft (10.7 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic112 (2020)
Projected traffic122 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was No. Adams Point RD over Irrigation Canal built?

It was built in 1980, making it 45 years old in 2025.

What condition is No. Adams Point RD over Irrigation Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does No. Adams Point RD over Irrigation Canal carry?

About 112 vehicles per day (2020 count).

How long is No. Adams Point RD over Irrigation Canal?

The structure is 37 ft (11.3 m) long with a longest span of 35 ft (10.7 m) and a deck 32 ft wide.

Who owns No. Adams Point RD over Irrigation Canal?

It is owned by the County Highway Agency.